<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <script>
        function Person(name){
            this.name = name
        }
        Person.prototype = {
            sayHi(){
                console.log('你好');
            },
            constructor:Person
        }
        let jack = new Person('jack')
        //prototype 和 __prot0__是同一个对象
        console.log(Person.prototype === jack.__proto__);
        jack.__proto__.run = function(){
            console.log(this.name + '在跑');
        }
        jack.run()
        console.log(jack.constructor);
    </script>
</body>
</html>